This Speech was a tactical hit piece on the election. For the Democrats, it was to embolden them, letting Biden speak the words that need to be said. For the Republicans, Biden has been using 'MAGA' to their disadvantage. The feeling right now is the Senate is lost, and the House might not go their way. What is made worse is that Biden is using MAGA as a string to tie shyt up; for Trump, for the Jan 6th Indictments that are coming, for the Sewer Rats, for the Ideology of Nationalist/Facism.
The common thought right now is, "You CAN'T win a Primary without Trump, but you CAN'T win a Election with Trump"
It's September, and Biden is putting Republicans on their heels to defend Trump and MAGA, further tying them up and unable to make a credible centrist point to attract Centrists/Former Republicans.